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Smolyan, Bulgaria climate
Cfa Humid subtropical
Smolyan has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 31°C, while the coldest is January averaging around −3°C at night. Around 820 mm of precipitation falls each year, peaking in May (109 mm) and easing off in August (38 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Smolyan climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 13 | 18 | 23 | 28 | 31 | 31 | 26 | 20 | 13 | 8 |
| Avg temp (°C) | 2 | 4 | 8 | 12 | 17 | 21 | 23 | 24 | 19 | 14 | 8 | 4 |
| Avg low (°C) | −3 | −1 | 2 | 6 | 10 | 14 | 16 | 16 | 12 | 8 | 3 | −1 |
| Precipitation (mm) | 70 | 60 | 63 | 53 | 109 | 92 | 52 | 38 | 51 | 79 | 70 | 85 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 13 | 18 | 23 | 28 |
| Avg temp (°C) | 2 | 4 | 8 | 12 | 17 | 21 |
| Avg low (°C) | −3 | −1 | 2 | 6 | 10 | 14 |
| Precipitation (mm) | 70 | 60 | 63 | 53 | 109 | 92 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 26 | 20 | 13 | 8 |
| Avg temp (°C) | 23 | 24 | 19 | 14 | 8 | 4 |
| Avg low (°C) | 16 | 16 | 12 | 8 | 3 | −1 |
| Precipitation (mm) | 52 | 38 | 51 | 79 | 70 | 85 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 9 | 8 | 9 | 8 | 5 | 3 | 5 | 6 | 7 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 3 | 11 | 13 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | 21 | 16 | 10 | 2 | 0.0 | — | — | — | — | 1 | 8 | 17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 9 | 8 | 9 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 3 |
| Days with low ≤ 0°C (days) | 21 | 16 | 10 | 2 | 0.0 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 3 | 5 | 6 | 7 | 9 |
| Days with high ≥ 32°C (days) | 11 | 13 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 1 | 8 | 17 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 68 | 67 | 64 | 60 | 49 | 37 | 33 | 46 | 59 | 65 | 69 |
| Relative humidity (%) | 87 | 84 | 80 | 75 | 70 | 61 | 51 | 50 | 59 | 74 | 83 | 87 |
| Wind speed (km/h) | 10.3 | 10.9 | 10.6 | 9.3 | 8.4 | 8.0 | 8.9 | 9.1 | 8.6 | 9.1 | 9.5 | 10.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 68 | 67 | 64 | 60 | 49 |
| Relative humidity (%) | 87 | 84 | 80 | 75 | 70 | 61 |
| Wind speed (km/h) | 10.3 | 10.9 | 10.6 | 9.3 | 8.4 | 8.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 37 | 33 | 46 | 59 | 65 | 69 |
| Relative humidity (%) | 51 | 50 | 59 | 74 | 83 | 87 |
| Wind speed (km/h) | 8.9 | 9.1 | 8.6 | 9.1 | 9.5 | 10.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Kurdjali, a weather station, about 56 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.